Stove door



W. L. MERSFELDER Nrw.v 27 1923.

' mmm Doon Filed April 5, 1923 A frown/fyi Patented Nov. 27, 1923.

mazze Toa-ZZ whomfz'imay edn-demi; y r r Be it known that I, VI'"LIA.ivi-: L.^MERS' FEEDER, a citizen 'ofthe lnitedfStates,l andn al resident of Cincinnati, in#lthe"'1eo1in`tyI of Hamilton and State O-"hio, have invented object is topr'vide'a door soieounterweigiht-f ed that it",'will'close'andopen automatically once it is :startedg iandin whiclilth'e openingv movement is so controlled that'the door-'canint [drop down'wt'h a f'sudden? jar; but on action. In new door'thereisn'o catch necessary to hold' itkk 'closet/l,- vandthe hinge' device ,isarranged seas toihringfthedoor" panel!,flush7 withithehas'e of the "ovenjwhen thejdoor is open,'fiminga projeetion the 45' same plane as th' `oven botton'ilover which to slide dishes and pans'witliout lifting?.- v

These :bjetfs and-advantage and other' improvements t0 he 4noted "I aeeo'i'nplish loyJ i that certain'cnstruction and arrangement Figure 2 is a section taken'jfverticallyL through" center'of4 thev'cdoor -rwhen= elosed showing., the' hinge .in' side" elevation;Y igure7 3; is" a detail elevation showing' the hingei in side elevation on azlarger scale, taken througli the:hingepivot.` A *Figure 4 ie afperspective ofthe retain-in clip for one of the hinge structures. v

`'Figure is'a side elevation showingthis clip` in place.y I

@Figure Giea detailrpe'rspectiveof the clip and l' counter'weight retaining segments. Y

Referring to the,v structure 'shown' ini the drawings which is' nierelyf an Y illustrative showing; loy means of which I will' endeavor to bring' out Vthe points of my invention, `I show an Oven. frame l', and a door having a framef2 anda panel 3. 1

The frame has elevated lugs 4, whic'hare cored in from the sides so astopermit' scr'ewf inlgtthefpanelrvto theudoor frame, without tappingvth'e Vdoor itself, or expo'sin'gfany screw oi boltfhe'ads at the-outside ofthe At eachlowercorner ofthe door frame,

th'ei'e is piioxfidedan 'arm marked generally,

at'5,"'(see Figur-e 5)", which 'arms have a special conformation so as to engage in' slots 6,- 6, iiithef oven frame',"and"roek to' andV fro over? thecurved haees?v of these slots.

The arme Vhave the" curved vunder edges 8,1."U torid'e on the curvedfslotrbases 7, and the upper edgesat 9 are also curved so asto hear onthe top edges of' the 'slots throughout'the rockingmovement.l The'arms project in a` slight downward slantf'(consideringy the door asfclos'edl), as indicated at 10, and this portionr l0 terminates in'fa rounded'shoulder il,

and ani angle projection 12,*s`ervin`g :the

function of al hook; From the shoulder and hopkthe 'arms project as at 13, in the same i directionA a'slvthe portions 10,: with the top edges-fof theiportions 18 formed as a seat for the "counterweight and theretaining clip. f f. l employ the 'retaining clip instead of tw'o" counter'weights, as lout' one weight' is necessary,`and also, since the weight takes up Some oven space,which should not be ocoiipiedat both sides of the oven.`

'Referring first-to `the Clip, it is formed with ya body portion 14E, which lies on the.

" seat at thetop vedge of one `of the arm por tions` 13 This" body `poit ion"then-bends downwardly as at 1:5, where it is slottedvto suiii'cientsize to slip over the end 13 of the Q i f 1,475,236

arm Von which it is mounted. The slot terminates in an angular' inner wall 15L thatV engages the Vangular projection 12, when the 13, and the clip itself projects beyond the slot to a bearing edge 16.

Formed in the oven frame are a pair of s egments 2a extending inwardly along the sides of each slot 6. Tlieedges 16 of the clip bear on two of these segments. The result yof this bearing, over which the clip rides as thedoor ismoved, is that the door cannot be pulled off from its seat in the, slots 6, and can only be removed by setting it midway of open and'closed position and lifting upwardly on the entire structure, to release the bearing of the clip. The clip can thenV be removed and the door removed from the oven frame. To hold the clip-in place a wire tie or cotter pin as indicated at 16, will preferably be used, a bolt or other fastening can also be used. v f

,The counterweight is no different in construction from the clip, and its portions are marked in a like manner. however, is extended and bent downwardly and formed into a weight portion 17 heavy enough to properly counterbalance the door. The lower edge of the door frame, yas shownv at 20, extends belowthe lower edge of the' arms, 5, and is so set as toglie against the oven' frame wall when the door is closed. As the door is swung open this edge 2O moves throughnthe small arc permitting `the entire door to swing on vthe point 2() asa center, the curves at 7, 8 and 9 being formed on center at A.

The panel of the door is so set that this swinging on its pivots of the door willbring it to the level of the bottom of the oven, said bottom beingindicated by the lines 21 (Fig. 2), when the door is open. k

The action of the counterweight, which passesV down below .the'oven bottom in a space left for that purpose, is such that when the door is swung open to some desired angularity to the perpendicular, it will then have shifted its center of gravity sufiiciently with relation to the center of the weight, to permit the door to fall entirely open. VVhen the door is closed to the same position, the

Vthereon, when the door nears its openv weight then has moved its centerA of gravity Y out far enough from the pivot center of the door to close it, and hold it closed without latches or springsl The segments'` aire formed on a curve which will cause the weight mounting clip to drag in its contact position, and this actsrto Vretard lthe `door motion to the end offavoiding a slamming action. l' i The weight clip needs' no Cotter pin or wire tohold it in place, as the effect of gravity is sufficient to enforce aclose Afollowing on the peripheries of the segments.

The portion 14,

When the door is closed, a perfectly flat surface is presented, except for the thickness vof the door Vwhere it laps the oven n frame, body of the clip lies on the top of the portion u lvith no protuberances to mar the appearance, catch the clothing and make cleaning difficult.

and can be hung, and removed and rehung, n

whenever this is desirable.

It may be observed that the entire structure is not only an kimprovement rin function over the usual journaled door, but is much less expensive inconstruction, and assembly cost.

I have not `attempted to describe alternative structure, in the above specification, but wish to cover the same, as coming within the scope of my invention, an example of which I have now described, and the inherent novelty of which Iv will now claim.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

`1. In combination with the frame of, a

chamber tobe opened and closed, said frame having slots therein, a-door for closing said chamber having arms to project through said slots and rock therein,`and a member on one of the arms, ,at least, re-

'movably secured thereto and presenting an edge faced toward the chamber opening, andv a curved projection on the oven frame yover which said edge rides in the movement of the door. p l y 2. In combination with a chamber khaving a frame surrounding and opening therein,

a doorto close said opening, an arm and` tion from the chamberframe against which vone of the free edges` ofy said device rests during lthe complete movement of the door.

3. In a door mounting device of the nature described, a mounting arm having a curved portion upon which the ,door rocks, a. downwardly extending hook yportion and an upwardly directed seat portion, and a counterweight adapted to lslip over the arm andi lie against said seat'portion, and hook behind saidhook portion.Y

4. In a door mounting device of the nature described,- a .mounting -arm having a curved portion upon whichthe door rocks,

a downwardly extending hook portion and an upwardly directed seat portion, and` a counterweight adapted to slip over the armand lie against said seat portion, and hook behind said hookportion, and in combination with said arml and counterweight, a curved member shaped lto, form an abutment along Ywhich the'hoolr engaging portion of the counterweight bears upon movementvof the door. f

5. In a door mounting device of the nature described, a mounting arm having a curved portion upon which the door rocks, a downwardly extending hook portion and an upwardly directed seat portion, and a counterweight portion during selected portions of the path thereof.

6. In combination with the frame oi' a chamber to be opened and closed, said frame having slots therein, a door for closing said chamber having arms to project through said slots, and rock therein, and means on one of the arms at least, removably secured thereto and presenting an edge faced toward the chamber opening, and a curved projection on the oven frame over which said edge rides in the movement of the door, said projection having its curve arranged to exert a braking friction against' the said edge at selected portions of its ath.

p 7. A door hinge, comprising a vertically slotted member, a door having an arm projecting through the slot of saidmember, said slot having a curved lower wall, and the arm having a curved lower wall to engage the like wall of the slot, and means adapted to hook demountably on the arm to prevent its withdrawal from the slot, said means being formed to serve as a counterweight for the door.

8. A door hinge, comprising a vertically slotted member, a door having an arm projecting through the slot of said member, said slot having a curved lower wall, and the arm having a curved lower wall to engage the like wall of the slot, and means adapted to hook demountably on the arm to prevent its withdrawal from the slot, said means being formed to serve as a counterweight for the door, and a segmental projection at the side of said slot adapted to engage an edge of the said counterweight means to hold it in position during the movement of the arm.

WILLIAM L. MERSFELDER. 

